BS-EN-13445-3-2002-A11-2006.pdf
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1、BRITISH STANDARD BS EN 13445-3:2002 +A11:2006 Corrected and reprinted incorporating corrigenda nos. 1, 2, 3 and 4 Unfired pressure vessels Part 3: Design ICS 23.020.30 ? BS EN 13445-3:2002+A11:2006 This British Standard, having been prepared under the direction of the Engineering Sector Policy and S
2、trategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 July 2002 BSI 2007 ISBN 978 0 580 59558 5 National foreword This British Standard is the UK implementation of EN 13445-3:2002 +A1:2007, A2:2007, A3:2007, A4:2005, A5:2006, A6:2006, A8:2006 and A
3、11:2006, incorporating corrigenda April 2003, September 2003, April 2004 and July 2004. Numbered corrigenda are issued twice a year by CEN. An issue (of a page) may apply to only one of the language versions (English, French and German). Therefore the issue numbers for each page in each language ver
4、sion may not be sequential. For future corrigenda, the index at http:/www.unm.fr/en/general/en13445 should be consulted to determine the latest edition of a page. When the reference to this European Standard has been published in the Official Journal of the European Communities (OJ), compliance with
5、 it will confer a presumption of conformity with the essential requirements covered by the standard in respect of the Pressure Equipment Directive (97/23/EC). The UK participation in its preparation was entrusted by Technical Committee PVE/1, Pressure vessels, to Subcommittee PVE/1/15, Design method
6、s. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Some of the figures provided by CEN for BS EN 13445-3 are of poor quality. If users require clarification when applying this standard they should contact the BSI secretary. This publication does
7、not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication Amd. No. DateComments 14293 Corrigendum No. 1 30 Apri
8、l 2003Implementation of CEN letters of correction November 2002 (Issue 4) and February 2003 (Issue 5) 14495 Corrigendum No. 2 19 September 2003Implementation of CEN letters of correction April 2003 (Issue 6) and July 2003 (Issue 7) 14913 Corrigendum No. 3 16 April 2004Implementation of CEN letters o
9、f correction November 2003 (Issue 8) and February 2004 (Issue 9) 15261 Corrigendum No. 4 30 July 2004Implementation of CEN letter of correction June 2004 (Issue 11) 1743230 November 2007Implementation of CEN/CENELEC amendment A1:2007, A2:2007, A3:2007, A4:2005, A5:2006, A6:2006, A8:2006 and A11:2006
10、 blank EN 13445-3:2002 (E) Issue 26 (2007-04) 2 Contents Foreword5 1 Scope6 2 Normative references6 3 Terms and definitions .6 4 Symbols and abbreviations8 5 Basic design criteria10 5.1 General10 5.2 Corrosion, erosion and protection.10 5.3 Load cases .12 5.4 Design methods.15 5.5 Thickness calculat
11、ions (DBF).17 5.6 Weld joint coefficient.18 5.7 Design requirements of welded joints.19 6 Maximum allowed values of the nominal design stress for pressure parts21 6.1 General21 6.2 Steels (except castings), other than austenitic steels covered by 6.4 and 6.5, with a minimum rupture elongation, as gi
12、ven in the relevant technical specification for the material, below 30 % 22 6.3 Alternative route for steels (except castings), other than austenitic steels covered by 6.4 and 6.5, with a minimum rupture elongation, as given in the relevant technical specification for the material, below 30 %. 22 6.
13、4 Austenitic steels (except castings) with a minimum elongation after rupture, as given in the relevant technical specification for the material, from 30 % to 35 %.23 6.5 Austenitic steels (except castings) with a minimum rupture elongation, as given in the relevant technical specification for the m
14、aterial, from 35 %.23 6.6 Cast steels24 7 Shells under internal pressure.26 7.1 Purpose.26 7.2 Specific definitions26 7.3 Specific symbols and abbreviations26 7.4 Cylindrical and spherical shells.27 7.5 Dished ends28 7.6 Cones and conical ends33 7.7 Nozzles which encroach into the knuckle region.42
15、8 Shells under external pressure47 8.1 Purpose.47 8.2 Specific definitions47 8.3 Specific symbols and definitions.48 8.4 General51 8.5 Cylindrical shells .52 8.6 Conical shell.73 8.7 Spherical shells80 8.8 Vessel ends81 9 Openings in shells.82 9.1 Purpose.82 9.2 Specific definitions82 9.3 Specific s
16、ymbols and abbreviations83 9.4 General88 9.5 Isolated openings 98 9.6 Multiple openings 109 9.7 Openings close to a shell discontinuity120 10 Flat ends 128 10.1 Purpose 128 10.2 Specific definitions128 10.3 Specific symbols and abbreviations128 10.4 Unpierced circular flat ends welded to cylindrical
17、 shells .130 10.5 Unpierced bolted circular flat ends137 10.6 Pierced circular flat ends140 EN 13445-3:2002 (E) Issue 18 (2006-02) 3 10.7 Flat ends of non-circular or annular shape.145 11 Flanges .148 11.1 Purpose.148 11.2 Specific definitions148 11.3 Specific symbols and abbreviations .149 11.4 Gen
18、eral150 11.5 Narrow face gasketed flanges154 11.6 Full face flanges with soft ring type gaskets169 11.7 Seal welded flanges.172 11.8 Reverse narrow face flanges173 11.9 Reverse full face flanges.175 11.10 Full face flanges with metal to metal contact.179 12 Bolted domed ends .182 12.1 Purpose.182 12
19、.2 Specific definitions182 12.3 Specific symbols and abbreviations .182 12.4 General182 12.5 Bolted domed ends with narrow face gaskets .182 12.6 Bolted domed ends with full face joints184 13 Heat Exchanger Tubesheets 187 13.1 Purpose.187 13.2 Specific definitions187 13.3 Specific symbols and abbrev
20、iations .188 13.4 U-tube tubesheet heat exchangers190 13.5 Fixed tubesheet heat exchangers205 13.6 Floating tubesheet heat exchangers.234 13.7 Tubesheet characteristic 253 13.8 Maximum permissible tube to tubesheet joint stress260 13.9 Maximum permissible longitudinal compressive stress for tubes 26
21、1 13.10 Design of tubesheet flange extension with a narrow face gasket264 13.11 Design of tubesheet flange extension with a full face gasket 269 13.12 Special tube-to-tubesheet welded joints.272 14 Expansion bellows 275 14.1 Purpose.275 14.2 Specific definitions275 14.3 Specific symbols and abbrevia
22、tions .277 14.4 Conditions of applicability278 14.5 U-shaped unreinforced bellows.281 14.6 U-shaped reinforced bellows .295 14.7 Toroidal bellows .299b 14.8 Fabrication .299h 14.9 Inspection and testing299i 14.10 Bellows subjected to axial, lateral or angular displacements 300 15 Pressure vessels of
23、 rectangular section.306 15.1 Purpose.306 15.2 Specific definitions306 15.3 Specific symbols and abbreviations .306 15.4 General308 15.5 Unreinforced vessels 308 15.6 Reinforced vessels .314 15.7 Openings 323 16 Additional non-pressure loads.325 16.1 Purpose.325 16.2 Specific definitions325 16.3 Spe
24、cific symbols and abbreviations .326 16.4 Local loads on nozzles in spherical shells.328 16.5 Local loads on nozzles in cylindrical shells.338 16.6 Line loads.349 16.7 Lifting lugs .356 EN 13445-3:2002 (E) Issue 27 (2007-06) 4 16.8 Horizontal vessels on saddle supports.360 16.9 Horizontal vessels on
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